Given two intersecting line segments, the angle they form at their
intersection, the coordinates of one endpoint and those of the
intersection, and the length of one of the line segments, how do you
determine the coordinates of the remaining endpoint?

A student seeks clarity on the meaning of f^2(x) and other expressions that juxtapose
functions and exponents. Doctor Vogler empathizes, outlining the differing
interpretations, before recommending contextual clues — and pointing up a
larger lesson about ambiguity.